On 09.07.2010 1:57, Bob Armstrong wrote: Looks like an incomplete marker file have been cached (when I copied a new version of file). I tried refreshing - no joy, I'm afraid. Check the marker file itself (http://pdp-11.org.ru/~form/hecnet/map/markers.txt) if it reads ok. I can read this file OK using this link. Any other ideas? Bob Found a workaround for IE < 8.0. Please try again.